When medical care goes horribly wrong, New York law gives patients only a limited time to take legal action. In most cases, a medical malpractice lawsuit must be filed within two years and six months of the alleged error. Missing that deadline can prevent a court from ever considering the merits of your claim.
Unfortunately, calculating the deadline (known as the statute of limitations) is not always straightforward. The filing period may be affected by ongoing treatment, a cancer misdiagnosis, the patient’s age, or the type of healthcare facility involved. Claims against municipal hospitals may also be subject to much shorter notice requirements.
Understanding which rule applies is essential to preserving a potential claim.
The general rule: two years and six months
For most medical malpractice claims, New York gives you two years and six months (30 months) from the date of the negligent act or omission to file a lawsuit. This deadline comes from CPLR § 214-a and applies to medical, dental, and podiatric malpractice claims, including claims involving physicians, hospitals, dentists, podiatrists, and other healthcare providers when the alleged negligence occurred in the course of professional care.
That 2.5-year window is worth emphasizing because it is shorter than the three-year deadline that applies to most other personal injury cases in New York under CPLR § 214. Someone who assumes a medical case follows the same three-year rule as a car accident can lose the right to sue because of that six-month difference.
Most personal injury lawsuits in New York must be filed within three years. Medical malpractice claims generally have a shorter deadline of two years and six months.
When does the clock start and when does it pause?
The default starting point is the date of the “act, omission, or failure complained of.” To put it in plain terms, the date the alleged mistake occurred.
However, New York recognizes an important exception called the continuous treatment doctrine. If the provider continues treating you for the same illness, injury, or condition involved in the alleged malpractice, the clock may not begin to run until that course of treatment ends.
For example, suppose an orthopedic surgeon improperly repairs a patient’s torn rotator cuff in January, then continues seeing the patient through June for persistent pain and limited motion in the same shoulder. If those visits constitute a continuous course of treatment for the same condition, the 2.5-year clock may begin when treatment ends in June rather than on the date of the January surgery.
New York courts look closely at whether the ongoing visits were part of a continuous course of treatment for the same underlying condition rather than routine checkups or examinations performed solely to determine the patient’s condition. The doctrine is frequently litigated and should never be assumed to apply without a lawyer’s review of the medical records.
The cancer-misdiagnosis exception: Lavern’s Law
For years, New York’s rigid starting date created a devastating problem for cancer patients. Because the clock generally ran from the date of the error—not the date the patient learned about it—some patients discovered that their cancer had been missed only after the filing deadline had already passed. Their claims could be time-barred before they knew they had one.
That changed with Lavern’s Law, enacted in 2018 and named for Lavern Wilkinson, a Brooklyn mother whose lung cancer went undiagnosed until after the applicable limitations period had expired. The law amended CPLR § 214-a to add a discovery rule for a narrow category of cases: the negligent failure to diagnose cancer or a malignant tumor.
Under Lavern’s Law, a cancer-misdiagnosis claim may be filed within two years and six months after the patient knows, or reasonably should know, both that a negligent act or omission occurred and that it caused an injury. When a claim relies on this discovery rule, it generally must still be brought no later than seven years after the original negligent act or omission. Continuous treatment may also affect how the deadline is calculated.
Because these cases turn on when a patient reasonably could have connected a delayed diagnosis to an earlier medical error, they are among the most fact-intensive medical malpractice claims. Reconstructing the complete treatment timeline is often necessary to establish the discovery date.
One caution that surprises many families: if a missed cancer diagnosis proves fatal, a wrongful death claim generally has its own deadline—two years from the date of death under EPTL § 5-4.1. Families should not assume that Lavern’s Law automatically extends that separate period. A wrongful death claim and a claim for the injuries the patient experienced before death are distinct legal theories that may be governed by different deadlines.
Objects left inside the body
A second discovery-based exception applies to foreign objects left inside a patient’s body, such as a surgical sponge, clamp, or instrument. A claim based on a foreign object may be filed within one year of the date the object is discovered or the date facts were discovered that reasonably would have led to its discovery, whichever is earlier.
This exception is strictly limited to foreign objects. Under CPLR § 214-a, it does not include a chemical compound, fixation device, prosthetic aid, or other device intentionally placed in the body.
Special rules for children
When the patient was a minor at the time of the malpractice, the statute of limitations may be tolled (a fancy legal term meaning “paused”) under CPLR § 208. The toll does not, however, extend the deadline indefinitely.
For medical, dental, and podiatric malpractice claims, the infancy toll cannot extend the filing deadline beyond 10 years after the claim accrued. Depending on the child’s age and the circumstances of the case, the actual deadline may be earlier.
For a very young child injured at birth, the toll can extend the effective deadline by several years, which is why a birth injury lawyer evaluates a child’s claim on a different timeline than an adult’s. A parent or guardian may file the child’s claim before the applicable deadline expires.
Claims belonging directly to a parent, such as certain claims for medical expenses, may be subject to a different deadline and may not receive the benefit of the child’s infancy toll.
Municipal hospitals: the 90-day trap!
If your care was provided at a municipal facility—for example, a NYC Health + Hospitals location—an entirely different and much faster set of deadlines may apply.
Under General Municipal Law § 50-e, a formal Notice of Claim generally must be served within 90 days after the claim arises. For claims governed by General Municipal Law § 50-i, the lawsuit itself generally must be commenced within one year and 90 days after the event on which the claim is based, subject to applicable accrual and tolling rules.
Courts have limited authority to permit a late Notice of Claim, but an application must be made within the applicable statute of limitations. Missing the notice deadline can therefore bar an otherwise valid claim.
Other government-operated facilities, including state-run hospitals, may be governed by different notice and filing requirements. Identifying the entity that owned and operated the facility is one of the first steps in evaluating a potential case.
One more requirement: the certificate of merit
New York medical malpractice complaints generally must be accompanied by a certificate of merit under CPLR § 3012-a.
Ordinarily, the plaintiff’s attorney must certify that they reviewed the facts and consulted with at least one physician whom the attorney reasonably believes is knowledgeable about the relevant medical issues. Based on that review and consultation, the attorney must conclude that there is a reasonable basis for bringing the case.
The consulting physician does not have to be publicly identified. The statute also contains limited exceptions and procedures for situations in which a consultation cannot be completed before the statute of limitations expires or necessary medical records have not yet been produced.
Because obtaining records and arranging a qualified medical review takes time, the practical deadline for contacting a lawyer is well before the legal deadline for filing a lawsuit.
New York does not generally cap compensatory damages
Another feature of New York law separates it from many other states: New York does not impose a general statutory cap on the compensatory damages a medical malpractice victim may recover.
Some states limit noneconomic damages—compensation for pain, suffering, and loss of quality of life—to a fixed dollar amount regardless of the severity of the harm. New York does not have such a statutory ceiling, although courts may review and reduce awards they find excessive.
This can matter significantly in catastrophic cases involving birth injuries, delayed cancer diagnoses, or surgical errors that cause permanent disabilities and substantial lifetime care expenses. The absence of a statutory cap does not change the filing deadline, but it can affect the potential value of a timely, well-supported claim.
Why waiting is the real risk
Even when an exception gives you more time on paper, delay works against you in other ways. Medical records must be requested and preserved, qualified physicians must review them, witnesses’ memories fade, and healthcare facilities reorganize or archive files.
Once the statute of limitations expires, courts generally cannot excuse a late filing simply because the claim appears strong. The safest assumption is that your window is shorter than you think.
If you think you may have a claim
A few steps can help protect your rights while you decide what to do:
- Get a second opinion and any necessary medical care first. Your health comes before the legal question.
- Request complete copies of your medical records, including treatment notes, imaging, laboratory reports, and pathology results.
- Write down a timeline of your appointments, symptoms, diagnoses, and what you were told.
- Speak with a medical malpractice attorney promptly so the correct deadline and any applicable tolling provisions can be evaluated before it is too late.
New York’s rules reward careful, early action and punish delay. Understanding which clock applies to your situation—the standard 2.5-year period, Lavern’s Law’s discovery rule, a municipal 90-day notice requirement, or the rules governing a child’s claim—is the first step toward protecting a potential case rather than losing it to the calendar.